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Security audit

定时助手

Security checks for vulnerabilities and agentic risk

Overview

This cron scheduling skill is mostly purpose-aligned, but it can create persistent scheduled jobs and bulk/delete them with weak documented safeguards.

Review this skill before installing if you rely on scheduled jobs. Use it only with explicit task names or tags, avoid --all unless you have checked the affected jobs, and confirm generated schedules before applying or deleting tasks.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (6)

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The skill metadata/description mixes unrelated translation/localization use-cases into a cron scheduling skill, indicating copy-paste drift or tampering. This can mislead an agent into invoking the skill for unintended tasks and, because the skill exposes read/exec/write tools, increases the chance of inappropriate command execution under the wrong user intent.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The description states 支持中文交互,无需复杂配置即开即用, while the rest of the file consistently frames supported natural-language patterns as Chinese-only. This is a language/locale constraint presented as a default capability without an explicit user opt-in or documented justification for restricting interaction to a single language.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The skill documents direct deletion of tasks without any confirmation, preview, or recovery guidance. In a scheduling tool, accidental deletion can silently disable recurring operational jobs, reminders, or health checks, creating integrity and availability risks.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 111)May include surrounding context.

模板 3:API 健康检查

bash
cron-assist template health-check \
  --endpoint "https://api.example.com/health" \
  --interval 5m --apply

模板 4:周报生成

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
88% confidence
Finding

Bulk pause/resume-all commands are presented as normal workflow steps without emphasizing their broad blast radius. An agent following these instructions could suspend all scheduled automations, including critical reminders or monitoring jobs, causing service gaps or missed operations.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The capability-coverage section asserts support for translation/localization scenarios that contradict the rest of the skill. In an agent ecosystem, contradictory capability claims are dangerous because routing and trust decisions may be made from documentation, causing this exec-capable skill to be selected in contexts it was not designed to handle.

Content

No source excerpt is available for this finding.